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Nov. 20, 1928. 1,692,036

. L. HACHENBERG WINDOW CLEANING DEVICE Filed April 9, 1927 IVENT Z? ym ATTQRNEYS! Patented Nov. 20, 1928.

PATENT OFFICE.

LUUIE; HAGHENBERG, F THROGGS NECK,

NEW YORK, ASSIGNOR 0F ONEJHIALF TO WILLIAM BRADY, 0F OSSINING, NEW YORK.

WINDOW- CLEANING DEVICE.

Application filed April 9,

This invention relates to an improvement in window cleaning devices, and more particularly to the cleaning element which is brought into contact with the window glass.

lit has for its object to provide a device which combines a plurality of scraping means l'or cleaning sleet and ice from the window glass, and a resilient wiper for removing the moisture from the glass, one of which scraping means is arranged to be brought into con tact with the glass and perform its function in advance oi the wiper as the device is actuated on the window glass.

Another object is to provide means for menu ting the device in its actuating arm so that the device may be moved bodily on its longitudinal axis and also on its transverse axis, whereby the movement of the device on its longitudinal axis will bring one or the other oi the scraping means into coaction with the resilient wiper, while the movement oi? the device on its transverse axis will compensate lor thediiii'erence in the plane or angle of the window glass with respect to the actuating arm.

Another object is to provide means on the actuating arm for securing the device against n'iovcment on its longitudinal axis, thereby holding the scraping means out of operation and maintaining the flexible wiper in contact with the window glass.

Another object is to provide certain i1nprovcinents in the :torm, construction and arrai g'ement ol the several parts, whereby the above named and other objects may be effecti vely attained.

A practical embodiment of my invention is represented in the accompanying drawings, in which Fig. 1 represents a side elevation of a portion of the actuating arm having my improved cleaning element applied thereto, the parts being shown in the position they assume when the resilient wiper alone is used.

Fig. 2 represents a front elevation of the same.

8 repr sents a horizontal section, on a larger scale, taken in the plane of the line lH-HI of Fig. 1.

Fig. l represents a similar view with the parts in another position, in which position 1927. Serial No. 182,353.

one of the scrapers is brought into coaction with the resilient wiper, and the arm. and device arranged to be moved in the direction oi? the arrow.

Fig. 5 represents a similar view with the parts in another position, the arm and device being shown in the position they assume when moved in the direction of the arrow.

Fig. 6 represents a horizontal section taken in the plane of the line VIVI of Fig. 1.

Fig. 7 represents a detail side elevation partly in section of a modified form of means for locking the scrapers out of operation.

Fig. 8 represents a horizontal section taken in the plane of the line VIII VIH of Fig. 'i".

Fig. 9 represents a detail side elevation partly in section of another form of means for holding the scrapers in their inoperative position, and

Fig. 10 represents a horizontal section taken in the plane of the line X-K of Fig. 9.

The arm is denoted by 1 and it may be either reciprocated or oscillated in a plane parallel to the plane of the window glass 2, by any well known or approved means. The end of the arm 1 is provided with an elongated groove 3, which is arranged to re ceive a cleaning element comprising a longitudinal channel member l having its edges turned outwardly to form scrapers 5, 6 dis posed in opposite direct-ions.

A resilient wiper 7 composed of a flat strip of flexible material, such as rubber, is folded to form a hollow contact portion 8, which normally extends outwardly beyond the edges of the scrapers 5, 6. The longitudinal edges of the folded strip are held firmly between the walls of the channel member 4, by pinching or otherwise securing, so that the hollow contact portion will assume a position midway of the edges of the scrapers.

The member 4 is loosely held in and spaced from the bottom oi the groove 3 by means oi a bolt 9 passed through an elongated slot 10 in the channel member 4 and secured in the wall of the groove 3. By reason out the elongated slot 10 in the channel member L and the bolt 9, the member is permitted to oscillate on its longitudinal axis thereby allowing the contact edge of one 01: the scrapers to move forwardly into the vertical iii) will.

plane of the hollow contact portion 8 of the and thereby rigidly hold the member ilgfllllsi wiper 7. Upon movement of one scraper torwardly, the other scraper will, of course, move rearwardly of the plane of the wiper.

ihus it will be seen that as the member 1 is rocked only one scraper will be brought into contact with the window glass together with the wiper. The scraper elected to coact with the wiper 7 in contact with the window glass is controlled by the actuation of the arm 1, and the direction of movement of the arm determines the particular scraper to be brought into action. This is accomplished by reason of the fact that at all times the hollow contact portion 8 is frictionally held against the window glass and the'lirst movement of the arm causes one of the walls of the groove 3 to engage the member a, which in turn rocks the contact portion 8 on the window glass until the advancing scraper strikes the glass.

Whenthe motion of the arm. is rerersec, the other wall of the groove will be brounht into engagement with the channel member 1-, and as the member is trictionally held at the contact surface of the portion 8 and window glass, the member will again be causec to rock until the other scraper strikes the glass. It is therefore evident that the movement of the arm 1 and member I} automatically brings the scraper, which is the forward scraper with respect to the movement of the arm, into coaction with the wiper 'i so that the window glass will first be scraped of any foreign matter, such as snow, sleet and ice. and then wiped free of any moisture by the hollow contact portion 8.

l i hen it is desired to place the scrapers out of operation. and only use the flexible wiper 7, 1 )rovide means for locking the cha nel mem er 4: inv the groove 3, which means, shown in Figs. 1 to inclusive, comprises an eccentric cam 11 pivoted at 12 between cars 18 extending outwardly from the arm 1. The cam 11 is' manipulated by a handle 1 1 so that it may be brought into engagement with a plunger 15 arranged to be moved longitudinally in a hole 16 in the arm 1. To loci: the channel member against movement on longitudinal axis, the cam is moved to it the position shown in Figs. 1 and 3, in which potiii sit-ion the plunger 15 has been caused to engage the contact of the member 1' and force it forwardly so that the rear end of the slot will be pressed against the bolt 9. in this position the channel member cannot move on its longitudinal axis but it may be slightly oscillated on its transverse axis by reason 01 the curved nose 1? of the plunger which holds the member in its forward position. in addition to the above means 1"or holding the channel member in a relatively fixed position, screws 18 are threaded in the walls of the grooves 3 and arranged to impinge against the sides of the channel menrlicr 1 movement on its longitudinal. axis, as clearly shown in Figs. 1 and (5.

To quickly put the scrapers into 011011111011, the screws 18 are withdrawn and the cam i n'ianipulated by the handle H; and thrown to the position shown in dotted outline in Fig. 1. This movement of the cam 11 liberates the plunger 15 so that the channel member 4: may again be allowed to oscillate on the bolt 9 and slot 10 on its longitiulinal Liln in the form shown in Figs. 7 and h, 1 provide a cam 19 pivoted at 20 in cars 21 'l'oruicd on the arm 1, which cam is arranged to more in a slot 2 and engage the channel member 1 to lock the same against movement on lo 'Ililitlllittl axis, thereby holding the scrapers a ray from the window glass.

lVhen the scrapers are to be used, the cum is swung to the position shown in dotlwl outline in Fig. 7. In order to allow the member at to reel: on its transverse axis, the tree of the cam 19 is longitudinally grooved at 533 so as to en'ibrace the back of the channel member =1 and allow a certain slight oscillation therebetween.

In the form shown in Figs. 9 and 10, the means for locking the member 4: against movement on its longitudinal axis inchules a thumb screw having a threaded engage ment with the arm; 1 and arranged to lie moved into engagement with teat .25 pi'ojc: 1- ing rearwardly on the back oi the member -l. The end of the thumb screw 21; is recessed Ill. to receive the teat 25. lVllCll the thumh screw 2% screwed into engagement with the teat the sccrapers will be caused to assume the position shown in Fig. 10.

it is to be understood that, in each ol? the towns shown, the locking means, carried by the actuating arm, is disengaged trom the channel member 1-, when. the channel nicml :cr is to be rocl-zed on its longitudinal axis by the actuating arm 1.

The resilient wiper T and the manner by which it formed is shown, described tlHl claimed in my copending application tier-in! l lo. 74:;[92 tiled Dccemher 11, 1925 obvious that various changes may resorted to in me itorm, construction and arrangenient ot the several parts without iiiparting from the spirit and scope oi my invention; and hence, 1 do not intend to be iiinited to the details herein shown and der-scrii rd except a they may be included in the claims.

hat claim is:

1. A window cleaning device con'iprising. an arm adapted to be moved in a plane parallel to the window, a cleaning clement mounted to oscillate on said a rm, said element including oppositely disposed scrapers and a resilient wiper interposed between said srru p-- ors, the contact surtace of said wiper unrinally extending beyond the edges of th scrapers, whereby the movement of the arm ltltl ill 1,692,036 fit will rock the element and bring one of the scrapers into contact with the window glass.

2 A window cleaning device comprising, an arm adapted to be moved in a plane parallel to the window, a cleaning element mounted to oscillate on said arm, said element including oppositely disposed scrapers and a resilient wiper interposed between said scrap-- ers, the contact surface oi? said wiper normally extending beyond the edges of the scrapers, whereby the movement of the arm will rock the element and bring one of the scrapers into contact with the window glass, and means for securing the element from oscillating on. its axis on said arm.

A window cleaning d vice comprising, an arm adapted to be moved in a plane parallel to the window, a cleaning element mount ed to oscillate on its longitudinal axis on said arm, said element including oppositely d1 posed scrapers and a resilient wiper inter-- posed between said scrapers, the contact surface of said wiper normally extending beyond the edges of the scrapers, whereby the movement oil the arm will automatically rock the element by reason of the resilient wiper contacting with the window glass and bring one of the scrapers into contact with the window glass.

4:. A window cleaning device comprising, an arm adapted to be moved in a plane parallel to the window, a clcanin element mounted to oscillate on its longitudinal and transverse axes on said arm, said element including oppositely disposed scrapers and a resilient. wiper interposed between said scrapers, the contact surface of said wiper normally extending beyond the edges of the scrapers, whereby the movement of the arm will automatically rock the element by reason of the resilient wiper contacting with the window glass and bring one of the scrapers into contact with the window glass.

5. window cleaning device comprising, an arm adapted to be moved in a plane parallel to the window, a cleaning element mounted to oscillate on its longitudinal and transverse aXes on said arm, said elementincluding oppositely disposed scrapers and a silient wiper interposed between said scrapers, the contact surface of said wiper normally extending beyond the edges of the scrapers, whereby the movement of the arm will. automatically rock the element by reason of the resilient wiper contacting with the window glass and bring one of the scrapers into contact with the window glass, and means carried by the arm for securing the element from oscillating on its longitudinal and transverse axes on said arm.

6. it window cleaning device comprising, an arm adapted to be moved in a plane parallel to the window, a cleaning element mounted to oscillate on said arm, said element including a longitudinal channel member having oppositely disposed scrapers integrally formed thereon. and a resilient wiper disposed in said channel member between said scrapers, the contact surface of said wiper norm ally extending beyond the edges of the scrapers, whereby the movement of the arm will automatically rock the element by reason of the resilient wiper contacting with the window glass and bring one of the scrapers into contact with the window glass.

7. A window cleaning device comprising, an arm adapted to be moved in a plane paral lel to the window, a cleaning element mounted to oscillate on said arm, said element includinn,- a longitudinal channel member having oppositely disposed scrapers integrally formed thereon and a resilient wiper dis posed in said channel member between said SCZTELPQTS, the contact surface of said wiper normally extending beyond the edges 01 the scrapers, whereby the movement of the arm will automatically rock the element by reason of the resilient wiper contacting with the window glass and bring one of the scrapers into contact with the window glass, and means carried by the arm for securing the channel member from oscillating on its axis.

8. A window cleaning device comprising, an arm adapted to be moved in a plane parallcl to the window, a cleaning element mounted to oscillate on said arm, said element including a longitudinal channel member having oppositely disposed scrapers formed thereon and a resilient wiper disposed in said channel member between said scrapers, the contact surface of said wiper normally extending beyond the edges of the scrapers vhereby the movement of the arm will rock the element and bring one or the scrapers into contact with the window glass, and means for securing the channel member from oscillating on its axis, said means being carried by the arm and movable toward and away from the channel member.

In testimony, that I claim the foregoing as my invention, I have signed my name this 'ith day of April, 1927.

LOUIS HACHENBERG. 

